it seems that there will never be a coin that can be stable, everything must have an up and down price movement which will be influenced by a very high demand, so a stable coin will show that the coin has no good development.
of course there is , do you here about usdt ? that is a stable coin and that is under on crypto category . being stable doesnt mean that a coin has no development , sure it is still being develop but its just doesnt have a volatile nature just like what we have on cryptocurrencies such as bitcoin , eth , bch , etc .
speaking of bitcoin , bitcoin is experiencing a stability right now because its value isnt moving for a long time although this might change verry soon .
What makes a coin stable is the fact that the value is controlled and pegged to something, which you and I both know that, is not the case for bitcoin. Like you have mentioned, what we are expecting now is just some short term less volatility which has happened way before and was even a very long period few years ago, and the fact that is happening, does not mean the market has become a stable coin, but the fact that it has reached a juncture between the bears and the bulls and it is absolutely not something that will last forever when it comes to a decentralized market.